Charles e



(No Model.)

0. E. JONES.

LOOK.

No. 441,875. Patented Dec 2, 1890.

UNITED STATES PATENT OFFICE.

CHARLES E. JONES, OF FLORENCE, ALABAMA, ASSIGNOR OF TWO-THIRDS TO\VILLIAM J. FLANAGIN PLACE.

AND ROHULUS J. HOFFMAN, BOTH OF SAME SPECIFICATION forming part ofLetters Patent No. 441,875, dated December 2, 1890. Application filedJuly 25,1890. Serial No. 359,867. (No model) To all whom, it mayconcern:

Be it known that 1, CHARLES E. J owes, a citizen of the United States,residing at Florence, in the county of Lauderdale and State of Alabama,have invented certain new and useful Improvements in Locks; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to that class of locks in which a series ofpivoted tumblers are employed, a cylinder being used in connection withthe key; and it consists in certain improvements in the construction ofsuch looks, as hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents an interior side Viewof a lock provided with my improvements. Fig. 2 is a similar view of thelock, the tumblers and cylinder being removed. Fig. 3 represents 'thecylinder which operates in connection with the key. and key.

A designates the casing of the lock, and B the lock-bolt, the latterhaving its greater part reduced in thickness and being provided with afence a to connect with thetumblers, as hereinafter stated. The saidbolt has an aperture or opening 0, which is formed to receive and allowthe movement of a lug or bit on the cylinder when the latter is turnedwith the key.

0 indicates a detector, which is pivotally connected by a post I) withthe lock-case. The said detector is L-shaped and extends along the upperedge and rear end of the lock-bolt, which is cut away to receive it, asshown. The vertical arm of the detector, which extends downward, isprovided with a post (Z for the pivotal connection of the tumblerstherewith, and the horizontal arm has a fixed pin or stud e, which formsa bearing-piece for the springs of the tumblers.

The tumblers g are pivotally connected at their rear ends with thevertical arm of the detector 0, the said tumblers being perforated andplaced in connection with the post d. At their forward extremities thetumblers are Fig. 4 illustrates the cylinder each provided with a slot1', adapted to receive the fence to on the bolt B when the bolt isretracted. An aperture m is made through each of the tumblers near thecenter, through which extends the cylinder h,which is slottedlengthwise, as shown, and is provided with a bit 0 for engagement withthe loclebolt. A key '22, used in connection with the cylinder, may bepassed into the slotted cylinder to be in position to engage the severaltumblers. The slots i in the tumblers are not on the same horizontalplane when the tumblers are at rest, and the apertures m and the wardsof the key M are somewhat various in form or extent, the parts being soconstructed that when the key with the cylinder is turned to retract thebolt the several tumblers are raised by the key-wards, so that the slots'5 are brought to the same plane in position to receive the fence at,when the bolt may be retracted by the cylinder-bit 0. When the lock-boltis shot, the tumblers are depressed by the action of their springs 29,which press against the pin 6 on? the detector C.

A shoulder r is formed on the upper edge of the bolt B in position toconnect with the horizontal arm of the detector 0, the said arm beingdepressed. If the cylinder should be turned byany means other than theproperkey, the effect will be to bring the fence a against the tumblersand push them back. This moves back the vertical arm of the detector andbrings down the front end of its long arm againstthe top shoulder of thebolt, thus preventing the latter from being retracted. Hence in order toretract the bolt it is absolutely necessary to first lift all thetumblers to bring their front slots in line with the fence, and this canonly be done by the appropriate key.

The springs of the tumblers work in connection with the detector andreturn the latter to its proper position when the bolt is relieved frompressure. The cylinder being passed through the tumblers is thussurrounded by a body of metal, which thus forms a protection against theinsertion of explosive material in the look.

I clain1-- In a lock, the combination, with the main through which saidcylinder extends, sub- IO stantially as and for the purpose set forth.

In testimony whereof Ihave affixed m y signature in presence of twowitnesses.

CHAS. E. JONES.

adapted to connect with the main bolt, the G. R. LANE, said tumblersbeing provided With apertures CHAS. JONES.

